Hidden Things (2024) Japanese Movie Trailer English Subtitles (かくしごと　本予告　英語字幕)

Chisako (Anne Watanabe) has had long standing conflict with her father Kozo (Eiji Okuda). She finds out he has Alzheimer’s so despite the rift in their relationship she returns home to take care of Kozo. One evening she has an accident with a boy on the road and when she tries to help him she finds evidence that the boy has been subject to abuse. To protect the boy, who has lost his memory, she pretends to be the boy's mother and begins to live with him. Over time they develop a mother and son relationship until the hidden truth starts to come out.